How do I find which software version my ZEN Thermostat is using?

To see the software or firmware version ZEN is running, pull the display off the wall, touch the center to enter PREFS and then scroll right until you see the INFO menu. Then scroll down to see the software version. It should be a 3 digit number with a decimal point, e.g., 1.01

The INFO menu also shows what configuration code you have set. It should be 3 characters: 2 digits and a letter, e.g., 12A